Bosch dishwashers are renowned for their efficiency and reliability, but occasionally they may encounter issues. The E24 error code on a Bosch dishwasher signifies a drainage problem. This rare fault can stem from various causes, including blockages in the drain hose, filter, drain pump, or air gap. A loose pump impeller cover or a faulty control panel might also trigger this error. Understanding these potential sources can help in quickly addressing the issue and restoring your dishwasher to proper working order. If you encounter this error, it's important to investigate these areas to resolve the drainage problem and get your Bosch dishwasher back to its usual high standard of performance.